Smelting furnace



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I A. JONES SMELTING FURNACE Filed Oct. 2, 1922 5 Sheets-Sheet 4 INVENTORARTHUR. J ONES 64 ATTORNEY Jan. 2 1,524,397

A. JONES SMELTING FURNACE Filed Oct. 2. 1922 s sheefs sheet 5 ATTORNEYZRTHUR JONES "BY 1W Gil Patented Jan. 27, 1925.

UNITED STATES PATENT OFFICE.

ARTHUR JONES, O'F BELLEVILLE, ILLINOIS, ASSIGNOR TO U. S. SMELTINGFURNACE COMPANY, OF BELLEVILLE, ILLINOIS, A CORPORATION OF ILLINOIS.

SMELTING- FURNACE.

- Appiication filed. October 2, 1922. Serial No. 591,804.

To (ZZZ whom it may concern:

Be it known that I, ARTHUR Jones, a citizen of the United States ofAmerica, residing at Belleville, county of St. Clair, State of Illinois,U. S. A., have invented a certain new and useful Smelting Furnace, ofwhich the following is such a full, clear, and exact description as willenable anyone skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, forming partof this specification.

My invention relates to a smelting furnace and more particularly toimprovements in rotary and tilting furnaces of the type shown anddescribed in Patent No. 1,334.45

granted to me March 23, 1920. The fluid fuel burner, however, whichforms one of the principal features of my invention may be applied tofurnaces of other types.

In the accompanying drawings which show one form of furnace made inaccordance with my invention, Figure 1 is a front ele vation, Figure 2is an enlarged vertical section taken on the line 22 of Figure 1. Figure3 is an enlarged section taken on the line 3-3 of Figure 4'. Figure 4 isa vertical longitudinal section. Figure 5 is an elevation of thecharging and pouring end of the furnace. Figure 6 is a detail viewshowing the protective covering for the air heating pipe. Figure 7 is asection taken on the line 77 of Figure 4. Figure 8 is a detail view ofthe central burner block. Figures 9, 10 and 11 are detail views of oneof the lining clamps, Figures 12 and a 13 are detail views of the liningclamp car rying the trunnions upon which the burner structure swings.Figures 14: and 15 are detail views of the damper support; Figure 16(Sheet 4.) is a detail view of one of the pipe clamps, Figure 17(Sheet 1) is a detail view showing the means for adjusting the structurevertically and Figure 18 (Sheet 2) is a detail view of the burnernozzle.

The combustion chamber of my furnace, indicated at 10, is cylindrical inform with conical ends and is rotatably supported in a framework 11.which is mounted on uprights 12 so as to turn on a horizontal axis 13 inorder to pour the contents. The construction of the combustion chamber(except at the pouring end) and its supporting means are in a generalway similar to that in my prior patent above referred to and, as theyform no part of the present invention, except in combination, they willnot be described indetail.

14 indicates the central burner block (shown in detail in Fig. 8). Thisblock is provided with a longitudinal passage 15 to receive the burnernozzle 16 (Figures 2 and 18). The burner nozzle 16 is adjustablelongitudinally by means of a pair of rods 17 and is preferably providedwith a metallic casing 18 to reduce friction. The nozzle is providedwith a yoke 19 forming a bear ing for the forward end of a central pipe20 to which the liquid or gaseous fuel is supplied thru a fuel pipe 21.22 is a vertical air pipe sealed in the block 14 and communieating withthe passage 15. Lining blocks 23 and 24 substantially surround thecenter block 14 and the lower end of the air pipe 22 so as to form apreheating chamber 25 around the burner and the whole is enclosed in ashell 26 provided with a flange 27 adapted to bear against the end ofthe furnace 10.

The shell 26 is rigidly secured to a bottom ring 28 provided with aflange for that purpose. The ring 28 is carried by three pipes or rods29 from which it is supported by set collars 30. The pipes 29 arecarried by a clamping ring 31 provided with trunnions 32. The trunnions32 turn in bearing 33 on the upper ends of sup porting pipes or rods 34by means of which the burner structure is principally supported. Inaddition to the lining clamping rings 28' and 31 the device is providedwith one or more lining supporting rings 28, the number depending on theheight of the burner structure. The rings 28 and 31 are quite similar tothe ring 28 (shown in detail in Figures 9, 10 and 11) which will now bedescribed.

Each of the rings 28 consists of two parts, one of which is providedwith three lugs 35 provided with openings to receive the pipes 29 andthe other with a whole lug 35 and a half lug- 36 so that it may be swungon one of the pipes 29 as a pivot (as shown in Figure 9). The lugs onthe movable parts are doubled so as to straddle the lugs on the fixedpart. A turn button 37 or other suitable fastening device holds theswinging member in closed position. The interior of the ring is providedwith an annular recess 38 adapted to receive a corresponding annularprojection on the enclosed sectional lining.-39. The ring 28' onlydiffers from the ring 28 in being provided with the flange for securingit in the shell 26 but the ring 31- difters not only in being of greaterwidth and carrying trunnions, but also in having two sets of lugs 35 onthe fixed part. The reason for this is that the pipes 29 terminate atthis point and are provided with both set collars 30 and nuts 30 oneabove and the other below the lower set of lugs while the upper setcarry extension pipes 29. Between the sectional linings 39 are sectionallinings 40 each of which is surrounded by a split pipe 40. The pipes +16are held in place by clamping rings l1 overlapping the pipes and thelining clamping .rings hereinbefore described. The ring 41, shown indetail in Figure 16, consists of three parts, two of which are pivotedto one of the pipes 29 by lugs 42 and the other held in position bybolts 43 passing through half lugs 44 on this part and similar halt lugs.on the swinging parts. Theextcnsion pipes 29 project upwardly from thering 31 and carry a clamping ring t1 and a solid top rim 4:5 enclosingextension pipe and lining, and a damper supporting member 46 (Figures 14and 15) having openings 47 for the pipe 29, a central opening 48 for thevalve stem and a pivot lug 49 connected by a link 50 to a lever 51controlling a valve stem 52 carrying the valve 53.

The air for the furnace is supplied from a compressor (not shown) to apipe 55 containing a regulating damper 56 communicatingthrough thetrunnions 32 with the down pipe 22. Thepipe 55 is provided with aswiveljoint 57 to allow of the necessary movement of the pipe when theburner structure is swung on its trunnions. v In order to protect thelower part of the down pipe 22 from the intense heat at this point, Imay surround it by. one or more lengths of refractory sleeving .54(Figures .2 and 6). The sleeve 54 is composed of two parts, eachprovided with interlocking lugs, 58 and 59 respectively.

60 is a frame, the upper end of which surrounds the lower part of theshell 26 and which carries a bracket 61 having ways for antl-frictionrollers 62 which assist in supporting the welght of the burner structureI when it is swung to and from the furnace andalso servesjto support thelower part of such structure when repairs are being made in the same. Inorder to adjust the trunnions I32 with'respect tothe rollers 62 thelower ends ofthe pipes 34" are let into holes in the floor, as shown inFigure 17 and threaded. to receive nuts 63; byv rotating these nutsthetrunnions maybe raised or lowered. The bracket 61 also carries a lever'64 engaging with a groove 65 in the bottom ofthe shell 26 and actuatedby a handle '66 to swing the structure on its pivot.

Theend of the furnacelO opposite to the burner is provided with acharging opening and a pouring opening 71 arranged directly below thesame so that the part 72 between the two openings will form a skimmingbar for holding back slag or dross when the metal is poured. The charing opening 70 is closed by a door 73 carrie on a shaft 74 (Figure 5).One end of the shaft 74 carries a worm wheel 75 engaging with a .worm 76on a vertical shaft 77. This shaft 77 is connected by mitre gears 78with a horizontal shaft 79 carrying the hand wheel 80 by means of whichthe door 71, is actuated. By this construction the door, which is ofconsiderable weight, is not only easily operated, but will remain in any)USI- tion in which it is placed until the hand wheel is further moved.The door 73 is preferably provided with a covered sight opening, 81.

The operation of my furnace is as follows: The door 73 is opened and thedamper 53 closed when the tire is started. after which the door isgradually closed and the damper opened until substantially the entireproducts of combustion are forced back under pressure aroundthe burner,through the chamber 25 and thence upward around the down pipe 22. 'Bythis arrangmncnt, the products of combustionat their highesttemperatures surround the fuel supply passage at the point of dischargeof the latter end and, as they cool, travel along the same toward thepoint of supply so that the maximum amount of heat is extracted from theoutgoing gases and the mixture of fuel and air is admitted to thefurnaceat the maximum temperature.

After the met'al in the combustion chamber is melted the fuel and airare cut oil and the burner structure swung on its trunnions 32 byoperating the handle 66 thus separating the said structure from thecombustion chamber so that the latter may be turned on its pivot 13 topour the contents.

Owing to the intense heat in the burner flue, it will be necessary'uttimes to renew the lining. To accomplish this, the set collars 30 undertheinjured section are lowered so that the weight of the lower part willrest on the frame 60 and the upper part is raised by means of the nuts63 so as to sufliciently separate its section. After this, the clampingrings 28 and 41 can be opened to allow of the removal of the pipe andlining.

Having fully described my invention,

what- I claim as new and desire to secure by Letters Patent of theUnited States is:

1. In a device of the class described, the combination with a combustionand smelting chamber, of a fluid fuel burner therefor the point ofdischarge of said burner being surrounded by protecting walls ofrefractory material, andv an. outlet passage for the products ofcombustion, said outlet passage surrounding said protecting Walls andthus enveloping the burner at its point of discharge into thecoml'iustion chamber.

2. In a device of the class described, the combination with a combustionand smelting chamber, of a fluid fuel burner therefor the point ofdischarge of said burner being surrounded by protecting walls ofrefractory material, an air supply pipe for said burner also surroundedby protecting Walls of re fractory material, and an outlet passage forthe products of combustion, said outlet passage surrounding saidprotecting walls and thus enveloping the burner at its point ofdischarge into the combustion chamber and extending along said air pipe.

3. In a device of the class described, the combination with a combustionchamber, provided with an adjustable door, of a fluid fuel burnertherefor, an air supply pipe for said burner, an outlet passage for theproduts of combustion extending along said air pipe, and a damper forsaid outlet passage, adapted to cooperate with the door in starting thefurnace.

4. In a device of the class described, the combination with a combustionand smelting chamber provided with an adjustable door at one end, of afluid fuel burner at the other end thereof, an air supply ipe for saidburner, an outlet passage for t e products of combustion surroundingsaid burner at its point of discharge into the combustion chamber andextending along said air supply pipe, and a damper for said outletpassage, adapted to cooperate with the door in starting the furnace.

5. In a device of the class described, the combination with a tiltingcombustion and smelting chamber, of a pivotally mounted burner structureadapted to be heated by the products of combustion from said combustionchamber, means for supplying air through the pivot of said structure,and means for swinging said burner structure on its pivot to connect itto and disconnect it from said combustion chamber.

6. In a device of the class described, the combination with a tiltingcombustion and smelting chamber, of a pivotally mounted burner structureadapted to be heated by the products of combustion from said combustionchamber, and means for vertically adjusting the pivot of said structure.

7. In a device of the class described, the combination with a tiltingcombustion and smelting chamber, of a pivotally mounted burner structureadapted to be heated by the products of combustion from said combustionchamber, and an auxiliary support independent of the pivot for the lowerpart of said burner structure.

8. In a device of the class described, the combination with a tiltingcombustion and smelting chamber, of a pivotally mounted burner structureformed in separable parts and adapted to be heated by the products ofcombustion from said combustion chamber, and an auxiliary support forcarrying a portion of said parts while the remainder are suspended fromthe pivot.

9. In a device of the class described, the combination with a tiltingsmelting chamber, of a charging opening therefor, a pouring openingbelow said charging opening, a wall between said openings forming askimming bar for the molten metal, a door for said charging opening, andactuating means for said door, including worm gearing.

In testimony whereof, I have hereunto set my hand and affixed my seal.

ARTHUR JONES.

